Rename network interface on Ubuntu 18.04

vi /etc/default/grub

GRUB_CMDLINE_LINUX="net.ifnames=0 biosdevname=0"

update-grub

vi /etc/netplan/50-cloud-init.yaml

network:
    ethernets:
        eth0:
            addresses: []
            dhcp: true
            optional: true
    versions: 2

netplan apply
reboot

See also